3com 5500-SI Manual De Usuario

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SSH Terminal Services 205
SSH Client Configuration
Table 186 describes SSH configuration tasks.
In the initial authentication, if the SSH client does not have the public key for the 
server which it accesses for the first time, the client continues to access the server and 
save locally the public key of the server. Then at the next access, the client can 
authenticate the server using the public key saved locally. 
Displaying SSH
Configuration
Use the display commands in any view to view the running of SSH and further to 
check the configuration result. 
Users using SecureCRT as the client side software will fail to log onto a switch if they 
check the Enable OpenSSH agent forwarding option.
Table 186   Configure SSH client 
Operation
Command
Description
Enter system view 
system-view
-
Enable the connection 
between SSH client and 
server  
ssh2 host-ipaddr [ port ] [ prefer_kex { 
dh_group1 | dh_exchange_group } ] [ 
prefer_ctos_cipher { des | aes128 } ] [ 
prefer_stoc_cipher { des | aes128 } ] [ 
prefer_ctos_hmac { sha1 | sha1_96 | 
md5 | md5_96 } ] [ prefer_stoc_hmac 
{ sha1 | sha1_96 | md5 | md5_96 } ]
Required
You can use this command to 
enable the connection between 
SSH client and server, define 
key exchange algorithm 
preference, encryption 
algorithm preference and 
HMAC algorithm preference 
between the server and client. 
Allocate a public key to 
the server 
ssh client server-ip assign rsa-key 
keyname
Required
You can specify on the client 
the public key for the server to 
be connected to guarantee the 
client can be connected to a 
reliable server. 
Configure the client to 
run the initial 
authentication 
ssh client first-time enable
Optional
By default, the client runs the 
initial authentication. 
Table 187   Display SSH configuration 
Operation
Command
Display host and server public keys 
display rsa local-key-pair public
Display client RSA public key 
display rsa peer-public-key [ brief | name keyname ]
Display SSH status and session 
information 
display ssh server { status | session }
Display SSH user information
display ssh user-information [ username ]